O'leary Et Al 2018 Ukots Evidence Gaps
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This is a repository copy of Evidence gaps and biodiversity threats facing the marine environment of the United Kingdom’s Overseas Territories. White Rose Research Online URL for this paper: https://eprints.whiterose.ac.uk/139484/ Version: Published Version Article: O'Leary, Bethan Christine orcid.org/0000-0001-6595-6634, Fieldhouse, Philip, McClean, Colin John orcid.org/0000-0002-5457-4355 et al. (4 more authors) (2019) Evidence gaps and biodiversity threats facing the marine environment of the United Kingdom’s Overseas Territories. Biodiversity and Conservation. pp. 363-383. ISSN 0960-3115 https://doi.org/10.1007/s10531-018-1660-5 Reuse This article is distributed under the terms of the Creative Commons Attribution (CC BY) licence. This licence allows you to distribute, remix, tweak, and build upon the work, even commercially, as long as you credit the authors for the original work. More information and the full terms of the licence here: https://creativecommons.org/licenses/ Takedown If you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing [email protected] including the URL of the record and the reason for the withdrawal request. [email protected] https://eprints.whiterose.ac.uk/ Biodiversity and Conservation https://doi.org/10.1007/s10531-018-1660-5 ORIGINAL PAPER Evidence gaps and biodiversity threats facing the marine environment of the United Kingdom’s Overseas Territories Bethan C. O’Leary1 · Philip Fieldhouse1 · Colin J. McClean1 · Adriana E. S. Ford2 · Polly Burns1 · Julie P. Hawkins1 · Callum M. Roberts1 Received: 30 January 2018 / Revised: 4 October 2018 / Accepted: 9 November 2018 © The Author(s) 2018 Abstract Understanding the evidence base and identifying threats to the marine environment is criti- cal to ensure cost-effective management and to identify priorities for future research. The United Kingdom (UK) government is responsible for approximately 2% of the world’s oceans, most of which belongs to its 14 Overseas Territories (UKOTs). Containing bio- diversity of global significance, and far in excess of the UK mainland’s domestic species, there has recently been a strong desire from many of the UKOTs, the UK Government, and NGOs to improve marine management in these places. Implementing evidence-based marine policy is, however, challenged by the disparate nature of scientific research in the UKOTs and knowledge gaps about the threats they face. Here, we address these issues by systematically searching for scientific literature which has examined UKOT marine biodi- versity and by exploring publicly available spatial threat data. We find that UKOT marine biodiversity has received consistent, but largely low, levels of scientific interest, and there is considerable geographical and subject bias in research effort. Of particular concern is the lack of research focus on management or threats to biodiversity. The extent and intensity of threats vary amongst and within the UKOTs but unsurprisingly, climate change associated threats affect them all and direct human stressors are more prevalent in those with higher human populations. To meet global goals for effective conservation and management, there is an urgent need for additional and continued investment in research and management in the Overseas Territories, particularly those that have been of lesser focus. Keywords Anthropogenic threats · Marine biodiversity conservation · Evidence base · Gap analysis · Research synthesis · UKOTs Communicated by Astrid van Teeffelen. This article belongs to the Topical Collection: Coastal and marine biodiversity. Electronic supplementary material The online version of this article (https ://doi.org/10.1007/s1053 1-018-1660-5) contains supplementary material, which is available to authorized users. * Bethan C. O’Leary [email protected] Extended author information available on the last page of the article Vol.:(0123456789)1 3 Biodiversity and Conservation Fig. 1 Marine areas of the United Kingdom’s Overseas Territories (UKOTS). World exclusive economic zones are shown in grey scale in map (a). Note that several of the UKOTs are subject to disputes by other countries and that the British Antarctic Territory legally has no marine waters in accordance with the Ant- arctic Treaty. Sovereign Base Area is abbreviated to SBA in (d) Introduction Scientific evidence is an essential component of the evidence toolkit for informing future research direction and management decisions (Dicks et al. 2014). Incomplete data and lim- ited knowledge, together with inadequate staff and budget capacity, present challenges for ensuring effective conservation and environmental management (Gill et al. 2017; Kings- ford et al. 2009). The United Kingdom (UK) government is responsible for approximately 2% of the world’s ocean (approx. 6.8 million km2). Just 11% (approx. 770,000 km2) of this lies within the UK’s domestic exclusive economic zone (EEZ) with the remainder spread across its 14 Overseas Territories (UKOTs) and their associated waters (Fig. 1). The vast area of marine waters that fall under the jurisdiction of the UKOTs contain a wealth of biodiversity (Churchyard et al. 2016; Dawson et al. 2014; Friedlander et al. 2014; Sheppard et al. 2012; Weber et al. 2014) much of which underpins ecosystem goods and services, predominately fisheries and tourism, upon which local communities, where present, often depend for their livelihoods (e.g. Amoamo 2013; Baker et al. 2015; Forster et al. 2014; Lester et al. 2017). However, a recent stock-take of marine biodiversity out to 12 nautical miles (nm) in the UKOTs concluded that knowledge of their marine species is poor and of variable quality (Churchyard et al. 2016). The UKOTs largely comprise islands and archipelagos spread across the Atlantic, Indian, Pacific and Southern Oceans, and the Caribbean Sea (Fig. 1). The three exceptions 1 3 Biodiversity and Conservation are Gibraltar, which is part of the European mainland, and Akrotiri and Dhekelia Sovereign Base Areas and the British Antarctic Territory (BAT) which are part of larger landmasses. All UKOTs have permanent civilian populations apart from BAT, South Georgia and the South Sandwich Islands (SGSSI), and the British Indian Ocean Territory (BIOT). The United Nations has recognised Henderson Island (part of the Pitcairn Islands group) and Gough and Inaccessible Islands (which fall under the jurisdiction of Tristan da Cunha) as World Heritage sites for biodiversity due to their largely intact ecology because of minimal human disturbance and the presence of endemic species, particularly seabirds (UNESCO 1988, 1995). The UK has committed to the Convention on Biological Diversity’s target of protecting at least 10% of the marine environment by 2020 (Convention on Biological Diversity 2010; also adopted within Sustainable Development Goal 14.5, United Nations 2015). Contrib- uting to this goal, the UK Conservative Party made a manifesto commitment in 2015 to create a ‘Blue Belt of marine protection’ around the UK and its Overseas Territories (The Conservative Party 2015), and this has now been adopted by the UK’s other major politi- cal party (The Conservative Party 2017; The Labour Party 2017). Four large-scale marine protected areas (MPAs, ≥ 100,000 km2) have already been designated, with plans for two more announced (Table 1). Two of these, the Chagos Archipelago MPA and the Pitcairn Islands Marine Reserve, have been established as full no-take areas, closed to all fishing (Government of Pitcairn Islands 2016; Sheppard et al. 2012). Recognising the importance of resource capacity for effective MPA management (Gill et al. 2017), the UK government committed funds of approximately £20 million over 4 years at the 2016 Our Ocean confer- ence (Washington DC) to implement and monitor large-scale MPAs around the UKOTs, focusing initially on BIOT, SGSSI, BAT, the Pitcairn Islands, Ascension Island, St Helena, and Tristan da Cunha (UK Government 2017). Ensuring effective marine management within the UKOTs and the ability to monitor the effectiveness of management actions, such as marine protected areas (MPAs), requires good knowledge of biodiversity and threats facing marine life. However, scientific research conducted within the various UKOTs is presented through a disparate literature and a com- prehensive assessment of this and the extent of threats facing UKOTs is currently lacking. Here, we address these issues by systematically searching for scientific literature which has examined marine biodiversity in the UKOTs and by exploring publicly available spatial threat data (Halpern et al. 2015, 2008). The objectives of this study are three-fold: (1) to comprehensively collate and describe marine biodiversity research within the UKOTs to assist decision-makers and researchers in targeting gaps in the evidence base; (2) to broadly identify the main threats affecting marine biodiversity in the UKOTs; and (3) to evalu- ate the extent to which scientific research is addressing threats facing marine biodiversity within the UKOTs. Methods The UKOTs consist of: Anguilla, the British Virgin Islands (BVI), the Cayman Islands, Montserrat, and the Turks and Caicos Islands (TCI) in the Caribbean; Bermuda in the North-western Atlantic; Ascension, St Helena, and Tristan da Cunha, and the Falkland Islands in the South Atlantic; the British Antarctic Territory (BAT) and South Georgia and the South Sandwich Islands (SGSSI) in the Southern Ocean; the British Indian Ocean Ter- ritory (BIOT, also known